iPhone Screenshots



Use your iPhone to find nails in wooden support beams within your wall, or any sort of magnetic metal hidden from view.

For this app to work, the nails in your wall should be magnetic and your device (iPad, iPhone or iPod) should have a built-in magnetometer. This app does not detect non-magnetic objects, For example, aluminum or wood studs.

DISCLAIMER: The performance of the app is limited by the construction of the wall, presence of a phone cover and/or the material of the nails in the studs.


If your device has a external case, please remove before using this app.

Calibrate your device’s magnetic sensor by moving the device in a "Figure 8" pattern. Then tap the "Intensity" reading displayed on the app to set the baseline to zero.

To accurately detect nails using this app, on iPhone 5s and below, sweep with the right edge of the device against the wall. For iPhone 6 and above, sweep with the top edge of the device along the wall.

Sometimes it helps to first figure out the location of the magnet (compass magnet) on your phone using a magnetic material so it becomes clear where to "mark" when you find a nail in the stud.

Localization Credits: Laura Klein (French), Ilgiz Khisamov (Russian), Yasu Yu (Chinese), Cem Yolcu (Turkish)

What's New

Version 4.1

+ Removed multiple ads on front app page upon request from users.

Ratings and Reviews

3.2 out of 5

117 Ratings

117 Ratings

You might doubt me but it really works

Blame fire

I have tried using this app on most of my household items. It can detect metals 100%. I have to admit that it is a little tricky as to what part of your phone you have to use to make it work. However, I have figured it out. That's sweet spot is at the center of your phone right below your lens and next to the power button. I figured it out by using a pair of scissors and using only the point of entry point to the phone to see where the sweet spot is. I still can't figure out how this app actually works or maybe the phone really has a magnet. I also noticed that it doesn't work on any metal. It works on metals that can actually be magnetized. I tried it on my father stainless steel watch at detected nothing. However, when I tried it on the refrigerator or the oven it works hundred percent. It is very nice keep up the good work. Maybe at some point in the future you can add more features to it.

Does find metal objects, screws or nails


I needed help finding studs while putting up a cabinet in the bathroom. When you pass the phone along the wall it will identify any metal objects using the iPhone's magnetometer close to the surface. I believe all iPhones have one which is also used when you use your compass app. I suggest that you test a real object to see where the sensor is on your phone which is approximately toward the upper half of the back of the phone. The sensor is sensitive and my be slightly off a half and inch or so off, so move it around to identify where the real peck is. As you identify objects, mark them with a pencil and see if they form aligned with any others. These are most likely the screws in the studs. Draw a straight line vertically and this should identify the stud. One area that I thought was the peak wound up not having a stud but moved the hole over a couple inches the the left and it worked.

Stud finder true Review


I have the 6s Plus. I'm not sure if the model makes a difference. I was skeptical at first. Not sure it would work. Begin to place my phone against the wall and motion around the whole wall and the "intensity" went high and the chime sounded. I got excited. Clicked on the info button and it told me to calibrate it so I did. I started making a rectangle about the size of the iPhone in the spots it chimed. I went vertical on the wall from the places it chimed and boom! It started hitting. After about 15 circles, I measured and they are all spread 16 inches apart! I'm shocked and amazed. Amazing app, I thank Jesus for giving the developer wisdom and may he be blessed in prosper in the work of his hands. God bless you.


Proteverse LLC
19.7 MB
Requires iOS 8.4 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Dutch, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Tamil, Traditional Chinese, Turkish
Age Rating
Rated 4+
© Venkatramanan Krishnamani
In-App Purchases
  1. Support Stud Find $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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